Thread: ISON outburst
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Old 17-11-2013, 04:45 AM
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glenc (Glen)
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Join Date: Jun 2005
Location: Terranora
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This morning Comet ISON is about mag 6. I compared it to two out of focus mag 5.6 and 6.3 stars using 20x80 binoculars.
The moonlight makes it seem fainter than two days ago, maybe it is.

COMET C/2012 S1 (ISON) Total-magnitude and coma-diameter estimates (visual unless otherwise noted): 2013
Nov. 14.52, 5.7, 2' (Carl Hergenrother, Tucson, AZ, U.S.A., 10x50 binoculars);
Nov. 14.41, 5.4, 5' (John Bortle, Stormville, NY, 15x70 binoculars);
http://www.icq.eps.harvard.edu/CometMags.html#2012S1
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